I want to parse the FBX model files with assimp, firstly, I need to generate some *.json which including the whole FBX model file information, and then rendering it through webGL in browser.
So far, I know we can dump the information of a fbx file, it will generate a .assxml or a *.assbin, it seems that the generated file inlucding all the information of a FBX model file. I wonder if it's possible that I can converting the *.assxml or *.assbin to *.json as above mentioned.
Please check https://github.com/assimp/assimp2json to solve this. There are plans to integrate this into assimp, but time is a really critical resource. So help is welcome :-).
Kim
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I'm playing around with Mediapipe and I'm trying to better understand how the graph works and what is the input/output of the different calculators.
If I understand correctly, the .pbtxt files are just plain-text instructions that describe how each calculator should interact with the rest of the calculators. These files are compiled into .binarypb files, which are fed to Mediapipe.
For example, this .pbtxt file got compiled into this .binarypb file.
I have a few questions:
I saw https://viz.mediapipe.dev/ , which seems to be Mediapipe's playground. That playground seems to be compiling the text in the textarea on the right. If that is correct, how does it do it? Is there any documentation I can read about it? How are .pbtxt compiled into .binarypb?
I'm especially interested in the web capabilities of mediapipe and I'd like to create a small POC using both face-mesh and depth-to-iris features. Unfortunately, there isn't a "solution" for the second one, but there is a demo in Mediapipe's viz claiming depth-to-iris web support (the demo doesn't seem to be working correctly though). If I were able to create a .pbtxt with a pipeline containing the features that I'm interested into, how would I ¿compile? the .wasm and .data files required to deploy the code to the web?
How can I detect images in a document say doc,xls,ppt or pdf ?
I came across with Apache Tika, I am trying its command line option.
http://tika.apache.org/1.2/gettingstarted.html
But not quite sure how it will detect images.
Any help is appreciated.
Thanks
You've said you want to use a command line solution, and not write any Java code, so it's not going to be the prettiest way to do it... If you are happy to write a little bit of Java, and create a new program to call from Python, then you can do it much nicer!
The first thing to do is to have the Tika App extract out any embedded resources within your file. Use the --extract option for this, and have the extraction occur in a special temp directory you app controls, eg
$ java -jar tika.jar --extract ../testWORD_embedded_pdf.doc
Extracting 'image1.emf' (application/x-emf)
Extracting '_1402837031.pdf' (application/pdf)
Grab the output of the extraction if you can, and parse that looking for images (but be aware that some images have an application/ prefix on their canconical mimetype!). You might need to run a second --detect step on a few, I'm not sure, test how the parsers get on with the extraction.
Now, if there were images, they'll be in your test dir. Process them as you want. Finally, zap the temp dir when you're done with the file!
Having used Tika in the past I can't see how Tika can help with images embedded within Office documents or PDFs I was wrong to answer No. You will have may still try to resolve to native APIs like Apache POI and Apache PDFBox. Tika does use both libraries to parse text and metadata but no embedded image support.
Using Tika makes these APIs automatically available (side effect of using Tika).
UPDATE:
Since Tika 0.8: look for EmbeddedResourceHandler and examples - thanks to Gagravarr.
I am totally new to flash development, don't even know ActiveScript yet.
I have to improve some existing flash application, so at first I need to understand the code.
I want to use some tool for code analysis, something to visualize class dependencies and code structure. I googled and found out about Apparat tool. Now I'm struggling with it because I can not find documentation that describes how to use Apparat. I'm frustrated, but it seems to be the only such tool.
So I started with example.
I've set up apparat running on FDT following this guide:
http://www.webdevotion.be/blog/2010/06/02/how-to-get-up-and-running-with-apparat/
The example (http://blog.joa-ebert.com/2010/05/26/new-apparat-example/) builds well and creates two SWF files. (I'm using ANT builder)
Now I want to analyze existing swf and see a PNG with class dependencies.
How should I do that?
What do I have to add and where?
Or maybe someone can explain how to use dump from windows command line? Something like
dump example.swf exampleAnalysis.png
After resolving all dependencies (which was tricky), I managed to get dump running
dump -i example.swf -uml
But it saves the UML diagram in .DOT format which is really hard to read as Graphviz GVedit cannot zoom and exports to PNG only what you see (messy impossible to read zoomed out graph), smyrna doesn't work and zgrviewer fails to load some files.
I want to download a pdf file progressively in an iPad application. I m not sure how to do that and google wasn't very helpful. can anyone help me understand the concepts here please. I am planning to render in core graphics.
Thanks.
Do you mean you want to render pdf pages before download is completed? If yes:
First of all, PDF format initially was not designed for that.
Let me explain. PDF file consists of a number of objects and xref. xref is a table containing location (in bytes from the beginning) of every object withing the file, so objects may be located at random locations withing the file. Even worse, xref itself is located at the end of file, so you can't locate any object in the file until you download it.
So, PDF is designed for random access. Actually, HTTP protocol allows it, so if you really need it, you can try to implement it :)
Good news for you: starting from PDF-1.2 there is a special feature called "Linearized PDF". It is designed exactly for your task, so you can render the first page before the next one if downloaded. You can google around or check out pdf reference for more details. The most important thing: you have to linearize pdf file using special tools, so not every pdf file can be rendered progressively.
Bad news for you: looks like core graphics doesn't support. I didn't tried it actually, but I found nothing re linearized pdf in core graphics documentation. (Please let me know if you will find anything.) So you may need to render PDF manually.
Not entirely sure about for iPad, but doing a Save as... in Acrobat by default it will be optimized as Fast Web View, which allows downloads a page at a time instead of the whole document in one go.
http://www.adobe.com/designcenter-archive/acrobat/articles/acr6optimize/acr6optimize.pdf
Linearzied PDF will meet your needs. You need a capable reader such as the one from Adobe to utilize this feature.
I am looking for a way to convert or export an audio file that would be either in MP3 or M4A format, to any of the following file formats: WMA, MP3, AIF, or OGG. I am aware of PCM, which is a CAF File, but Unity does not support this file. I cannot use AFConvert or anything similar with the iOS SDK in Xcode.
You should definitely use CoreAudio. Especially the ExtFileReader C API. Apple has sample codes for an offline conversion example on how to use this. (Can't post the link, because it is behind authentication.)
Here try this link if you haven't:-
http://developer.apple.com/library/ios/#samplecode/iPhoneExtAudioFileConvertTest/Listings/ExtAudioFileConvert_cpp.html
It has a C++ class to perform audio conversion. A good look at the project will help you in understanding the concepts to some extent.
you can also refer to this PDF:
http://izotope.fileburst.com/guides/iZotope_iOS_Audio_Programming_Guide.pdf
The rough idea is that you need to understand the basics of each file format and set the various audio properties to save PCM or LPCM in to a specific format. For mp3 you do not get an encoder from apple but only a decoder as per my knowledge. But AAC or WAV formats can b used easily for the same purpose. for MP3 Lame encoder and decoder can be used but im not sure how to use it.
I hope it will help you achieve what u want.